How to use MessageBox

johnsonlim026 · June 14th, 2005, 02:06 PM

   i am a beginner.How to use massage box in asp.net?Why it cannot recognize the syntax?

    int MessageBox(
     HWND hWnd,
     LPCTSTR lpText,
     LPCTSTR lpCaption,
     UINT uType
                  );

planoie · June 14th, 2005, 02:40 PM

ASP.NET code runs on the server so you can't use a messagebox (as the messagebox would appear on the server and thus be of no use to user at the other end of the browser).

You need to emit javascript to the HTML stream that calls the "alert" method at the client.

-Peter

johnsonlim026 · June 14th, 2005, 11:32 PM

Thanks planoie.So how to emit the script and do it?Can you give me an example?

jbenson001 · June 15th, 2005, 12:47 AM

check out this link
http://www.tek-tips.com/viewthread.c...1076731&page=1

johnsonlim026 · June 15th, 2005, 09:24 AM

Don't understand...I need more precise..help!!

planoie · June 15th, 2005, 10:40 AM

You need to have the following show up in your HTML:

<script language="javascript">alert("my message");</script>

How you get that onto the page is up to you based on where you intend to use the alert dialog.

-Peter

johnsonlim026 · June 17th, 2005, 10:20 AM

I have undersand the usage of the message box at the server side.Thank you.Since I am willing to make if for the client side,the following is my coding.But why it is not functioning?Is it my computer is the server while running the ASP.net and thus I can't see the messagebox that should appearat the client side.If so what can I do?

<%@ Page Language="vb" AutoEventWireup="false" Codebehind="WebForm1.aspx.vb" Inherits="asian.WebForm1"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
   <title>WebForm1</title>
<meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
<meta content="Visual Basic .NET 7.1" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
   <script type="text/javascript">
    function confirmDelete(){
     var x=("Are you sure want to do this?");
        if(x){ return true; } else{ alert("Delete cancelled"); return false; } }

   </script>
</HEAD>
<body MS_POSITIONING="GridLayout">
    <form id="Form1" method="post" runat="server">

<asp:label id="lbl1" style="Z-INDEX: 101; LEFT: 19px; POSITION: absolute; TOP: 18px" runat="server"
        Height="19px" Width="160px">Enter Your Name</asp:label><asp:textbox id="txtName" style="Z-INDEX: 102; LEFT: 24px; POSITION: absolute; TOP: 56px" runat="server"

Width="216px" MaxLength="30"></asp:textbox><asp:label id="lbl2" style="Z-INDEX: 103; LEFT: 24px; POSITION: absolute; TOP: 104px" runat="server"

Height="32px" Width="224px"></asp:label><asp:button id="ok" style="Z-INDEX: 104; LEFT: 40px; POSITION: absolute; TOP: 176px" runat="server"

Width="80px" Text="ok"></asp:button><asp:button id="BtnExit" style="Z-INDEX: 105; LEFT: 168px; POSITION: absolute; TOP: 176px" runat="server"

Height="24px" Width="112px" Text="Exit" CausesValidation="False"></asp:button></form>
    </body>
</HTML>

johnsonlim026 · June 17th, 2005, 10:21 AM

    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        BtnExit.Attributes.Add("onclick", "return confirmDelete();")

    End Sub